Gasolene-measuring apparatus.



C. H. DUFFY.

-GASOLENE MEASURING APPARATUS.

APPLICATION FILED IEB. I. 1917.

L', Patented. Aug. 2o, 1918.

FFQQ

CHARLES HUGH DUFFY, 0F CHEVY CHASE, MARYLAND, ASSICNOB 0F TWO-THIRDS T0 WALTER J'. COSTELLO AND J. CHARLES MCGUIRE, BOTH 0F WASHINGTON, DISTRICT 0F COLUMBIA.

raraaoa.

GAS'OLENE-MEASURING APPARATUS.

Patented Aug. 20, 191%.

Application uled February 7, 1917. Serial No. 147,131.

To all lwhom z't may concern.'

Be it known that I, CHARLES HUGH DUFFY, a citizen of the United States, residing at Chevy Chase, in the county of Montgomery and State of Maryland, have invented certain new and useful Improvements in Gasolene-Measuring Apparatus; and I do declare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertain's to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, whichy form part ofthis specification,

rlhis invention relates to liquid measuring apparatus, but more particularly to apparatus designed for the measuring of gasolene, and the invention has for its object to provide a gasolene measuring apparatus in. which the pump or other liquid lifting device does not .measure or assist in measuring the quantity of liquid discharged from themachine.

A further object of the invention is to provide an apparatus so constructed and arranged that no liquid can be dispensed therefrom until a certain definite and predetermined quantity has been fed thereto.

A further object of the invention is to provide a liquid measuring and dispensing apparatus in which the alternate lling and emptying of the measuring tank is automatically controlled so as'not to be under the manual control of the operator or vender.

With these and other objects in view the invention consists in the novel construction and arrangement of the parts and particularly in the arrangement and construction of the liquid` receiving and measuring tank andits coacting parts, so that the quantity of liquid fed to the measuring tank is'automatically, controlled to such an extent that short stroking of the measuring apparatus is eliminated and to such an extent that the full quantity of liquid is fedvto the measuring'tank and dispensed therefrom without regard of the intentions of the operator or vender.

The invention further consists inthe novel construction and arrangement of the parts which provide for the returning of leakage under one condition to the operator or vender, and which provides for the dispensing of the leakage under another condition to the purchaser.

The invention further consists in the novel claims.

Referring to the accompanying drawing- Figure 1 is a view partly in elevation and partly 1n section of a liquid measuring apparatus constructed in accordance with this invention. v

Fig 2 is an enlarged horizontal sectional view taken on the hollow piston and feed pipe, the rack bar being removed, and one of the locking plunger housings being shown in section in order to facilitate the illustralon.

Fig. 3 is an enlarged. vertical sectional view of the casing, the piston rod being shown in elevation and broken away, and

Fig. 4 is an enlarged fragmentary elevation of a portion of the piston rod illustratingA its calibration.

ike numerals of reference indicate the same parts throughout the several figures, in whichl indicates the liquid measuring apparatus, which includes a storage tank 2, which under usual conditions is buried under ground for the purpose of safety. 8 indicates the discharge pipe from the storage tank through which the liquidis drawn therefrom. 4. indicates a pump which in the accompanying drawing is illustrated as a rotary pump, although it is understood that any suitable pump or other lifting means may be employed for the purpose of lifting the liquid, such as asolene, from the tank 2 by means of the pipe 3.

As shown in the drawing, a compound gearing 5 is employed, the same being driven manually by a crank 6, so as to rotate the a proper lifting of the liquid through the lpipe The pump 4 discharges -into the led pipe 7 which is connected to a two-Way and closely fitting therein is a piston l having a concaved upper aceicr surface ll and losinga provided with a transverse opening 12 controlled by a float actuated valve i3. 'Connected to the piston 10 is a hollow pispropos and into the enihle dispensing hose 35, the trap 33 heing provided to prevent liquid from iiowing from the tank 9 by gravity.

Connected. to the hollow piston rod lf-l and movable therewith is a depending rackhar 86 meshingn with a pinion 37 loosely inounted on the shaft 38 of the puinp operating Vcrank o, while pawl 39 mounted on the pinion 3?' engages a ratchet l0 rotatable with the shaft 3@ ci the crank 6 so that upon rotation ot the crank t and shaft 38 clockwise, no rotary movement is imparted to the pinion 37 to niove the rack-bar 36, while roton rod lewhich passes through a stung\tation oi the crank 6 and shaft 38 contrabox l on the tank 9,' the bore lt ci the piston rod lf-l communicating with. the concaved face or surface il of the piston l0.V The hollow piston rod le entends downwardly v and enters loosely a casing l? which is connected at its lower end to a two-way valve 18, which two-way valve 18 1s 1n turn connected directly thereunder to aleak tank lill i9, while a return pipe 20 also connects the two-way valve i8 with the storage tank 2. Disposed in the casing or housing1 l?, ad-

jacent the two-way valve 8 are two plungers 2l and disposed in the hollow piston rod le are two sets oi depressions 22 '23, said depressions in the piston rod il being arranged so as to receive the inner ends of the plungers 2l.

lteterringnow to Fig. 2 it will heseen that a T-shaped handle 2l is provided for the two-way valve 8, while from l it will be seen that the handle 24 of the twoway valve 8 is connected to the handle 25 ci the two-way valve l by a link 26, Referring to the several figures it will be seen that the r-shaped handle 2e is connected to the hollow piston rod le on opposite points of said rod h v means of springs 27 connecting with A ins 28 on the hollow piston rod lll, while it will he seen from Figs. 2 and 8 that the casing or housingn ll' is provided on opposite sides with a slot 29 through which the said pins 28 on the piston rod lll extend.

TWhen it is desired to equip the apparatus with means for measuring a fractional part of the entire contents oi" the nieasurinp,I tank 9, the piston rod ll can he calibrated hy arranging therein at proper predetermined intervals, a plurality of notches or recesses 30 and the housing or casing1 17 can he equipped at its upper end with a plurality of pivot-ed dogs 3l, each in line with a notch or recess 30 on the piston rod lik Connecting with the two-wav valve 8 is the discharge pipe 32 which is arranged to torno a trap 33 communicating with the leak tank 19, as shown in Fig. l, a check valve 3l being provided between the leak tank i9 and the trap 33 to prevent the contents of the pipe 32 troni passinoa into the leak tank i9 while the contents or the tank i9 are being dispensed through the pipe 52 clockwise, causes the pinion 3? to' be rotated to act upon and move the rack-har 36.

Having thus described the several parts oi the dispensing,g apparatus as shown in the accompanying drawing, its operationis as follows:

Upon rotation ot the crank clockwise, the pump litts liquid ironi the tank 2 and delivers saine through the pipe 'l' into the tank 9 under the piston l0. tir or gas entering the tank 9 under the piston l0 is relieved through the valve control opening l2 and the pressure ci the liquid causes the piston to rise in the tank 9, the limit of the piston stroke being indicated in dotted lines in l.l1 ig. l. ,When the piston 9 is in its lowerrnost position, as shown in Iull lines in Fig. l, both of the locking plungers 2l are registered with 'their recesses or notches 22 in the hollow piston rod le, and the ulshaped valve handle 24@ ot the two-way valve 8 is in position shown in Fig. l, the saine beingl in said position by reason oi the downward pull .oi the springs 27, as shown in llig. l., le soon, however, as the piston 10 and its hollow piston rod le starts to move upward under the inlluen ce of liquid forced und er the piston l0, the notches or recesses 22 in the piston rod ll pass upwardly and out of contact with the inner ends'oi the plungers 21, forcing said plungers outwardly and into position shown in 3, wherein the lowerrnost plunger 2l is in engagement with the T- shaped handle 2l of the two-way valve 8, thus retaining1 the handle 2e of the valve 8 into its lowernoost position, as shown in Figs. l and 3. l/vhile the handle oi the valve 8 is in this position, direct communication is maintained between the pump e and the measuring tank 9 through the pipe l, while connnunication between the discharge pipe 32 and the pipe Z and tank 9 is cut-od hy the valve 8. Under the inuence ci the liquid passing to the tank 9, the piston continues to rise and the springs 2i' pass troni position shown in lig. l into position shown in lull lines in Fig'. 3. and as the piston i0 reaches the limit or its stroke, the notches or recesses 23 in the piston rod le register with the plungers 2l, which plungers drop into the notches or recesses 23 under the in- Huence of the lunger springs 41 which unlocks the handlle 24 of the two-way valve 8 causing the springs 27, which have reachedl the osition shown in dotted lines in Fig. 3, to t ow the valve handle 24 into position shown in dotted lines in Fig. 3, thus automatically cutting-od communication be- 'tween the pump 4 and the measuring tank 9,

and opening communication between the tank 9 and the discharge pipe 32 by means of the two-way valve 8. The upward stroke.

of the piston lOis thus automatically regulated and further liquid cannot be delivered from the storage tank 2 into the measuring tank 9. v The tank 9 is now ready to dispense or discharge its contents and the crank 6 is now rotated contraclockwise, which causes the rack-bar 36 to lower the piston 10 in the tank 9, and as said piston is lowered the Ycontents of the tank 9 are discharged through the two-way valve 8 and. through the discharge pipe 32 through the trap 33 into the dispensing hose 35. On the downward stroke of the piston 10, the notches 23 in the piston rod 14 pass out of engagement with the plungers 2l, the uppermost plunger ofA which engages the handle 24 of the two-way valve 8 and locks said handle in its uppermost position, as shown in dotted lines in Fig. 3, thus maintaining communication between the tank 9 and the discharge pipe 32. As the piston 10 nears the limit of' its downward stroke, the springs 9 on the valve handle 24 are carried down by the piston rod 14 so as toexert a strong downward pull on the two-way valve 8, and as said piston 10 reaches the downward limit of its stroke and has dispensed its entire contents, the plungers 21 drop into the notches 22 in the piston rod 14,*thus unlocking the valve handle 24 out of its raised position and causing the springs 27 to throw the valve handle 24 into its lowermost position, as shown in Fig. 1, thus instantly cutting-0H communication between the measuring tank 9 and the discharge pipe 32 and simultaneously effecting* communication between the pump 4 and the measuring tank 9. It will thus be l'seen that communication between the pump 4, storage tank 2gand the measuring tank 9 cannot be eilected until the piston 10 has discharged or dispensed the'ventire contents of the tank 9 and4 that shortstroking of the piston 10 is ed'ectually prevented. When, however, the piston 10 has reached the limit of its downward stroke and has dispensed the entire contents of the tank 9, communication between the pump 4 and the tank 9 is automatically edected as just described, so that rotation of the crank 6, clockwise, again forces liquid into the tank 9 and under thel piston 10 to again raise the piston 10 and refill the tank 9.

Having'thus described the action of the apparatus, as far as the lling of the measurravenna ing tank 9 and dispensing its contents, leakage past the piston 10 is taken care of in the followin manner:

The va ve handle 24 of the two-way valve 8 being linked to the valve handle 25. of the two-way valve 18,' the said two-way valve 18 is thrown or operated simultaneously with the two-way valve 8. While the liquid from the storage tank 2 is being forced to the measuring tank 9 and the piston 10 is passing through its iipward stroke, the handle 25 of the two-wayvalve 18 is in position shown in Fig. 1 and opens communication between the housing or casing 17 and the return pipe 20 leading to the storage tank 2. Any leakage, therefore, past the piston 10 during its upward stroke runs down through the hollow piston rod 14 and through the twowayvalve 18 intothe return pipe 20' and into ,the storage tank 2, thus the leaka e of the apparatus during the filling stro e .ofthe piston 10 passes back to the operator or vender1 of the liquid. As soon, however, as the piston 10 has reached the limit of its upward stroke, the valve 18 is thrown simultaneously with the valve 8 and communication between the casing or housing 17 and the return pipe 20 is cut-0E, while communication is simultaneously effected between the casing or housing 17 and the leak tank 19. Thus on the downward or dispensing past the piston 10, which it will be understood is from the contents of the tank '9, passes down throughthe hollow piston rod 14 through the two-way valve '18 and into the leak tank 19 and thence from the leak tank 19 into the discharge or disthus be seen that pensing pipe .32. It will upon the downward strokev or dispensing stroke of the piston l0, any leakage past the piston 10 is delivered to the purchasenso that he receives the full and entire contents of the measuring tank 9, irrespective of the leaky condition of the piston 10.

From the foregoing it will be seen that the limit of the stroke of the piston 10 is beyond the control of the vender or purchaser of the apparatus. It will also be seen that itis impossible to dis ense liquid from the measur# lng tank unti the measuring tank, has received its full and predetermined :quantity of liquid, and it will further be seen'that it is impossible to force liquidagain to themeasuring tank 9 until it has rst dispensed its entire contents, for the reason that should the pump be operated in the direction or for the purpose of forcing liquid to the measuring tank 9 before the piston 10 has reached the limit of its downward stroke, the eect would be simply of forcing the liquid against the two-way valve 8 where it could go no farther. On the other hand if it were attempted to dispense liquid from the tank 9 before it has received its predetermined iso A quantity and before the piston lo the limit oiits upward stroke the eilect would be to discharge from the 9 li rectly through the pump il, back into ""lie storage tank 2.

Having thus lully described the inve, tion, it is apparent that the apparatus shown in the accompanying drawing and described in the :foregoing speciiication, is susceptible to changes, alterations and variations in the design, construction and arrangement or.n the parte, and l consider rnyseli3 clearly entitled to all such changes, inodiiications and Variations as .tall within the limit and scope of the appended claims.

l/lfbat l claim as new and desire to secure by Letters Patent of the United States, is

l. A liquid measuring apparatus, includ ing in combination with a storage tank, a

measuring and dispensing tank, a piston said measuring and dispensing tank, ineens ifororcing liquid from the storage to the measuring and dispensing tank, a dir pensing pipe, .rneans for alternately effecting communication between the storage tank and the measuring and dispensing tank and between the dispensing pipe and the nies-sun ing and dispensing tank, hollow piston rod for said piston, means actuated by saidhollow piston rod :tor controlling the position of said second mentioned means, means :lor alternately effecting communication between the interior ot the hollow piston rod and the storage tank and between the hollow piston rod and the said dispensing pipe and rsenns for lowering the said piston to dispense 4contents oi the measuring and dispensing tank.

Q. A liquid measuring apparatus including a storage tank, a measuring and dispensing tank, a piston in the measuring and dispensing tank, inea-ns for edecting coin, munication between the storage tank and the measuring and dispensing tank, a dispensing pipe, means tor alternately ed'ecting communication between the measuring and dispensing tank andthe storage tank and between the measuring and dispensing tank and the dispensing pipe, a hollow piston rod for said piston, means controlled by the position of the said piston for controlling the position ot the second mentioned means ineens 'for alternately etlecting comnuinicea tion ,between the interior ci the hollorsfv piston rod andthe storage tank and between the hollow piston rod and the said dispensing ipe.

3. A liquid measuring apparatus including a storage tank, a measuring and dispensing tank, a connection between the storage tank and the measuring and dispensing tank, a piston in the measuring and dispensing tank, means 'for forcing liquid from v"he storage tank to the measuring dienU sat point under the piston raise the saine and controlled by the position oi the said piston in the measuring and dispensing tank for opening and closing communication between the measuring and dispensing tank and the storage tank and a dispensing pipe ior dispensing liquid ironi the measuring and dispensing tank.

s. A liouid measuring apparatus including a storage tank, a measuring and dispensing connected therewith to receive liquid therefrom, a piston in the measuring and' dispensing tank, a dispensing pipe, means controlled by the position or the said piston for edecting communication between the said dispensing tank and the storage tank and between the said dispensing tank and the dispensing pipe, means :tor controlling the dow of leakage `from the dispensing tank alternately to the storage tank and to the dispensing pipe. l

5, A liquid measuring apparatus include ng a storage tank, a measuring and dispensng tank in communication with the storage tank, a piston in the measuring and dispensing tank for alternately effecting corninunloation between the dispensing tank and thefstorage tank and between the dispensing tank and the dispensing pipe and means tor controlling the direction oi the ilow of leakage past the piston in the said measuring and dispensing tank.

'5. El liquid measuring apparatus including a storage tank, ameasuring and dispenstank in communication with the storage tank to receive liquid therefrom, a piston in said measuring and dispensing tank a dis pensino" pipe ror dispensing liquid from the dispensing tank and ineans controlled by the' position oi the piston in the dispensing tank for controlling the tlow or leakage past the piston in the dispensing tank alternately to the storage tank and dispensing pipe.

'if'. .d liquid measuring apparatus including vv"aldispensing tank, a piston therein, means controlled by the position or the piston for controlling the direction of the :dow or liquid passing to and from the dispensing tank and ineens controlled by the' position oithe piston in the dispensing tank ior controlling the direction ci ilow of leakage past the piston in the dispensing tank.

8. d liquid measuring" apparatus including a dispensing tar'ik,4 a pistontherein, said dispensing tank being arranged to 'receive liquid to be dispensed, means controlled by the position of the piston in the dispensing tank ior regulating the quantity of liquid passing thereto and for regulating the quantity ci liquid passing therefrom and means igor controlling the direction ot How or the leakage past the piston in the dispensing tank.

9. l liquid measuring apparatus including a dispensi tank, a piston therein, means controlling the quantity oi' llO liquid passing to the dispensing tank and for automatically controlling the quantity of liquid discharged from the dispensing tank, and means for automatically controlling the direction of iow of leakage past the piston in the dispensing tank.

l0. A liquid measuring apparatus including a dispensing tank, means for automatically controlling the quantity of liquid passing to the dispensing tank and for automatically controlling the quantity of liquid discharged from the dispensing tank and means for automatically controlling the direction of iiow of the leakage from the dispensing tank.

1l. A liquid measuring apparatus including a dispensing tank to receive dispensed liquid, means for automatically controlling the. quantity of liquid passing to the dispensing tank and means-for automatically controlling the direction of flow of leakage from the dispensing tank.

l2. A liquid measuring apparatus including a dispensing tank, a piston movable therein and actuated by the pressure of liquid entering the dispensing tank, means controlled by the stroke of the piston in the dispensing tank for controlling the quantity of liquid passing to the dispensing tank, a dispensing pipe and means for controlling the direction of liquid past the pisl ton in the dispensing tank.

In testimony whereof I aiiix my signature in presence of two Witnesses.

CHARLES HUGH DUFFY. In presence of- T. P. Bnrr'r, MINnTrE A. BERGMANN. 

